Wix Pro Gallery Request: Saving Versions of Your Pro Gallery in Site History
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Currently, it is not possible to save versions of your Pro Gallery in your site history. This means when you make a change to your Pro Gallery and publish your site, you cannot undo those changes by restoring a previous version of your site from your site history. The Pro Gallery always displays the most recent version.
We are always working to update and improve our products, and your feedback is greatly appreciated.